"Wed, 14 Jan 1970 11:39:11"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700114
Only TIME
11:39:11
General datetime
1970-01-14 11:39:11Z
For Database
1970-01-14 11:39:11
For HTTP1.1
Wed, 14 Jan 1970 11:39:11 GMT